package com.atguigu.gulimall.ware.config;

import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;

@Configuration
public class MyRabbitConfig {
    /**
     * 使用JSON序列化机制,进行消息转换
     */
    @Bean
    public MessageConverter messageConverter(){
        return new Jackson2JsonMessageConverter();
    }

    /**
     * 库存服务默认交换机
     */
    @Bean
    public Exchange stockEventExchange(){
        //String name, boolean durable, boolean autoDelete, Map<String, Object> arguments
        TopicExchange topicExchange = new TopicExchange("stock-event-exchange",true,false);
        return topicExchange;
    }

    /**
     * 普通队列
     * @return
     */
    @Bean
    public Queue stockReleaseStockQueue(){
        //String name, boolean durable, boolean exclusive, boolean autoDelete, Map<String, Object> arguments
        Queue queue = new Queue("stock.release.stock.queue",true,false,false);
        return queue;
    }
    /**
     * 延迟队列
     */
    @Bean
    public Queue stockDelayQueue(){
        /**
         * x-dead-letter-exchange : stock-event-exchange
         * x-dead-letter-routing-key : stock.release
         * x-message-ttl : 120000
         */
        HashMap<String, Object> arguments = new HashMap<>();
        arguments.put("x-dead-letter-exchange", "stock-event-exchange");
        arguments.put("x-dead-letter-routing-key", "stock.release");
        // 消息过期时间 2分钟
        arguments.put("x-message-ttl", 60000);

        Queue queue = new Queue("stock.delay.queue", true, false, false,arguments);
        return queue;
    }
    /**
     * 交换机与普通队列绑定
     */
    @Bean
    public Binding stockReleaseBinding(){
        return new Binding("stock.release.stock.queue",
                Binding.DestinationType.QUEUE,
                "stock-event-exchange",
                "stock.release.#",null);
    }

    @Bean
    public Binding stockLockedBinding(){
        /**
         * String destination, DestinationType destinationType, String exchange, String routingKey,
         *        			Map<String, Object> arguments
         */
        return new Binding("stock.delay.queue",
                Binding.DestinationType.QUEUE,
                "stock-event-exchange",
                "stock.locked",
                null);
    }
}
